Blue Toon boss Jim McInally admitted his anger at his side after a dismal first half performance against Livingston on Saturday.
McInally slammed the poor first half showing from his players, but was encouraged by the second half turn around.
Livingston snatched victory in the 113th minute, just as it looked like McInally’s side were heading for a penalty shoot-out against the visitors.
Speaking after the game, the Peterhead boss said that while his strikers had a dismal day at the office, he had high praise for his defence.
“We did defend really well and we never gave up,” he said.
“The longer the game went on we showed a bit of belief and at one point I thought we could take it to penalties.
“Nothing seemed to fall for us on Saturday and you need that at this level, playing against a team like that you just know that someone will pick us off at some point in the game.
“We just didn’t quite hold out, but at least in the second half onwards they had a wee bit about them.
“We should have had more of the ball and pressed more to put them under pressure.
“Defensively we did really well and our best players were our defenders.”
On Andy Rodgers’ red card, McInally added: “While I’ll never protect them from mouthing off, the referee did infuriate him.
“Their goalie picked up the ball, put it down and picked it up again - that’s an indirect free kick but the ref seemed to forget the rules,” he said.
“It was a big moment in the game and it will cost Andy the same as it did Rory McAllister and he will be out of the team next week,” he added.
Meanwhile, Livi manager, John McGlynn said he was delighted to get through to the semi-final but added it had been ‘nip and tuck’ at one point.
“We had many, many chances but if you don’t take them you give the opposition a bit of belief and that’s just what happened,” he said.
“We’re delighted to get through though despite making it hard work.”
Peterhead now get back to league business with an away trip to Forfar on Saturday.